A $40.8 million expansion of the National Museum of the U.S. Air Force will open June 8 at Wright-Patterson AFB, museum officials said Wednesday.

The years-in-the-making, privately financed 224,000-square-foot fourth hangar was expected to draw more visitors to the world’s largest military aviation museum that attracts more than a million people every year.

“We do expect an increase (in attendance), said Rob Bardua, museum spokesman. “There’s been a lot of excitement about the fourth building and we’ve certainly received a lot of calls and emails.”

For the complete story by Barrie Barber of the Dayton (Ohio) Daily News, click here.